diff --git a/packages/tui/src/routes/session/index.tsx b/packages/tui/src/routes/session/index.tsx
index 2b0af18e7f..4e95a5094e 100644
--- a/packages/tui/src/routes/session/index.tsx
+++ b/packages/tui/src/routes/session/index.tsx
@@ -1983,6 +1983,7 @@ function UserMessage(props: { message: SessionMessageUser }) {
         border={["left"]}
         borderColor={delivery() ? theme.border.default : color()}
         customBorderChars={SplitBorder.customBorderChars}
+        backgroundColor={theme.background.default}
       >
         <SessionImages images={images()} paddingLeft={2} />
         <box